Knot-tying device



1,481,754 M. STALSON KNOT TYING DEVICE Filed Oct. 12, 1920 WITNESSES fNl/E/VTOR $4,. QM MARTIN 5714mm. I BX r i ATTORNEYS FQBTGT-TYENG DEVICE.

filed October is, 1920. Serial no. new.

To all whom may concewt:

it known that f. Manna; S'rALsoN, a citizen of the United States, and e resident Minneapolis in the county of Hennepin' end State of Minnesota, hove invented a new and improved liinot-Tyin Device, of

which the following is a full, c ear and em.

description,

1 This invention relates to e knot tyin device and hes reference more particulsr y to a device of this character for forming knots in cord or twine, which is used in tying up & eclitages of letters and the like.

The primary object of the invention is to provide simple and cheep device for effecting the above recited result and especially a device which is capable of csrryout its intended use with the greatest of etficiency.

The accompanying drawing illustrates a preferred embodiment of the invention and the some will be describing; the device in detail.

seid drawing- F is e persoeetive view e longitudinal se tion..

g. 3, front elevetion looking in the direction the arrows indicated at 3-3 his. 1 is a perspective view of a part of the device showing the first step in forming the knot.

his. 5 is at similar view showing the secin forming the lrnot and i is view else similar to shoving the relative position of the cord (in full lines) "net before the lrnot is completed, the dotted lines showing the lrnot as substantially complete.

f cording to the proposed preferred form e device at suitable housing or casing provided to house the parts; This houscesin is constructed primarily of e sheet of metal formed with side walls top 8, end attaching flanges 8 at the of the side walls. The housing preferebly slants alone; the top as shown with knot former comprising the needle- 9 pro jecting through. an opening in the high end of the housing, the opening being sur rounded by e beveled flange 10. For rea sons which will he presently mentioned the is split or forked producing two resilient prongs 11 end 12 the subste hereinafter referred to inlowerends of which being reduced and confined in an opening by a cotter pin in an operating lever 13 pivoted as at Mill the low end of the housing. The lever is disposed longitudinally of the housing with its free end extending beyond the end of the high part of the housing.

A coiled spring 15, supported around the post 16, is adapted to maintain the lever adjacent the top 7 of the housing with' the needle 9 projecting through the opening therein. The lever may be manipulated to retract the needle within the housing, the

spring returning the same to normal position.

Attention is directed to the peculiar con-- struction of the needle. As stated, the same is split producing two substantially resilient prongs, 11 and 12. The inner face of each prong is rounded or convexly curved, so to speak, providing outwardly flaring lips 17, with theabutt-ing faces 18 between the lips and the slot 19. When the needle is pro ected from the housing, the resiliency of the prongs may be realized to easily slide the cord between the abutting faces 18 and into the slot 19. The frictional contect of the abutting faces, which while permitting the cord to be inserted in and withdrawn from the slot will grip the same sulficiently to cause a slight pull to be excrted in withdrawing the cord from the slot.

lhe operation is substantially as follows:

The cord to be knotted is held between the thumb and index finger of both hands and looped around the needle (see Fig. 4), one end of the cord, preferably the end A, which is under the end A is inserted between the lips 1? into the slot 19 (see Fig. 5), the lever 13 is then pressed down whereupon the end of the cord held within the slot 19 will be drawn through the loop by the re-.v

traction of the needle, which will also disengage the loop from around the needle. B exerting a pull the knot thus formed will be drawn tight as the end A of the cord is still held in the slot 19, it is released however when thepull is sufficient to slide it between the abutting faces 18.

From the foregoing it will be seen the operation is extremely simple, at the same time it is positive and little or no skill is required to manipulate the device.

on the end A of thecor' I l leving thus described my invention, 1 desire to claim:

l. In a device-of the cherecter described, ahousing having on opening formed through one wall thereof, at lever tulornined at one end Within the housing in n llone contiguous to the inner face of the sci one wall, snid lever hnving the free end thereof protruding from the housing, a spring disposed Within the housing and yieldingly maintaining said lever in s plane extending in contiguous parallel relation to the sol one Wall of the housing, and e needle secured at its one end to said lever end being of e length to extend through said opening be yond the plane of the outer face of the said one wall when the lever is in the said position in respect to the said Well and to be retracted into the housing when the lever is swung e determined distance about its tuh cruin against the notion of the spring, said needle heving e transverse slot in the normally projecting portion thereoi and being split from the slot to the free end thereon.

2. lln a device of the character described a housing having on opening formed through one Well thereof, it lever inlorinned at one end Within the housing in o plane contiguous to the inner face of the seid one Well, said lever hsvin the free end thereof protruding from the ousing, s. spring isposed within the housing and yieldingly maintaining said lever in n plane extending in contiguous perellel relation to the said one Well oi the housing e needle secured at its one end to seid lever and being of a length to extend through said opening heyond the plane of the outer face of the ssid one Well when the lever is in the said position in respect to the seid Well and to be retracted into the housing when the lever is swung :i determined distance about its fullcrum against the action of the spring, said needle having a transverse slot in the normolly projecting portion thereof and being split from the slot to the free end thereof, and a beveled flan e on the outer face of the said one" Wall oi the housing end in encircling relstion to the projecting portion of the needle.

3, in a device of the character described, 21 needle having a, transverse slot extending therethrough sit an appreciable distance from one end thereof and being split longitudinally from the tnnisverse slot to the said one end, thus producing two prongs at the said one end of the needle, said needle being made of a material having inherent spring quelities end the inner face of each pron being convexly curved so that the inner aces of the two prongs abut each other intermediately and are spaced apart at their ends, a support provided with an opening through which the needle rnsy move in the direction of the needle so that the split end portion of the letter normally projects beyond the end of the opening remote from the ssid needle cerrying means, the letter bein inovehle relatively to the sup rt to Wit drew the splitend portion of t .e needle through the opening STALSQN.

its length, and ineons carrying 

